68515359308 has 12 divisors (see below), whose sum is σ = 130802049672. Its totient is φ = 31143345120.

The previous prime is 68515359277. The next prime is 68515359323. The reversal of 68515359308 is 80395351586.

It is a super-2 number, since 2×68515359308² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68515359308.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 778583585 + ... + 778583672.

It is an arithmetic number, because the mean of its divisors is an integer number (10900170806).

Almost surely, 2^68515359308 is an apocalyptic number.

It is an amenable number.

68515359308 is a deficient number, since it is larger than the sum of its proper divisors (62286690364).

68515359308 is a wasteful number, since it uses less digits than its factorization.

68515359308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557167272 (or 1557167270 counting only the distinct ones).

The product of its (nonzero) digits is 3888000, while the sum is 53.

The spelling of 68515359308 in words is "sixty-eight billion, five hundred fifteen million, three hundred fifty-nine thousand, three hundred eight".